Inventor · disambiguated record
Yuji Kumagai
Also filed as: KUMAGAI YUJI
15 granted patents·3 pending applications·183 citations·filing 1978–2023
92Inventor score
Top patents by PatentIndex Score
18 records- 0195US4563606AElectric rotary machine with toroidal windings on an annular stator coreHITACHI LTD·Filed 1983·Granted Jan 7, 1986·101 cites·9 claims
- 0281US7456533B2Motor and electric apparatus equipped with a conductive pin for suppressing electrolytic corrosionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Nov 25, 2008·14 cites·12 claims
- 0379US7957688B2Image forming method and image forming apparatusSHARP KK·Filed 2007·Granted Jun 7, 2011·5 cites·3 claims
- 0474US9842912B2Semiconductor device and method of manufacturing semiconductor deviceFUJI ELECTRIC CO LTD·Filed 2016·Granted Dec 12, 2017·2 cites·15 claims
- 0574US7526217B2Image forming apparatus and waste toner warning methodSHARP KK·Filed 2006·Granted Apr 28, 2009·4 cites·19 claims
- 0673US7660547B2Charging deviceSHARP KK·Filed 2007·Granted Feb 9, 2010·4 cites·21 claims
- 0769US7339329B2Dimmable ballast for an electrodeless discharge lampMATSUSHITA ELECTRIC WORKS LTD·Filed 2003·Granted Mar 4, 2008·14 cites·17 claims
- 0868US8121530B2Image forming method and image forming apparatusTAKIGUCHI TOSHIKI·Filed 2011·Granted Feb 21, 2012·1 cites·8 claims
- 0955US5388928AFlexible membraneous weirBRIDGESTONE CORP·Filed 1993·Granted Feb 14, 1995·15 cites·7 claims
- 1055US4217514AStator structure for induction motorHITACHI LTD·Filed 1978·Granted Aug 12, 1980·15 cites·17 claims
- 1150US12092552B2Hose remaining lifetime prediction method and hose remaining lifetime prediction systemBRIDGESTONE CORP·Filed 2020·Granted Sep 17, 2024·0 cites·6 claims
- 1250US2023290816A1Semiconductor deviceFUJI ELECTRIC CO LTD·Filed 2023·Application pending·0 cites
- 1348US10164058B2Semiconductor device and method of manufacturing semiconductor deviceFUJI ELECTRIC CO LTD·Filed 2017·Granted Dec 25, 2018·0 cites·1 claims
- 1446US2024273268A1Hose remaining service life prediction method and hose remaining service life prediction systemBRIDGESTONE CORP·Filed 2022·Application pending·0 cites
- 1545US9658588B2Image forming apparatus, image adjustment method for the image forming apparatus, and adjustment pattern imageSHARP KK·Filed 2014·Granted May 23, 2017·0 cites·12 claims
- 1638US2013039680A1Color image forming apparatus and color misalignment adjusting methodKUMAGAI YUJI·Filed 2012·Application pending·0 cites
- 1737US5945785APower source device with minimized variation in circuit efficiency due to variation in applied voltage to driving transformerMATSUSHITA ELECTRIC WORKS LTD·Filed 1997·Granted Aug 31, 1999·8 cites·13 claims
- 1830US9024989B2Registration adjustment method for image forming apparatus and image forming apparatusOHTOSHI TAKENORI·Filed 2012·Granted May 5, 2015·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →